Mold for casting metal pipes.



No. 887,070. v PATENTED MAY 12, 1908.

' E. A. GUSTER.-

MOLD FOR CASTING METAL PIPES. PPPPP canon FILED JULY 26, 1907.

' g m y g 5 WITNESSES:

lllllllllE p Tl-lfillltl MGLD FOR GASTEZNG lllZ XJTAL IFZEEEL Application filecl my 2e, 190i.

To all whom it may concern:

Be it known that EDGAR A. CUs'rER, acitizen of the United Stotes, resi ling at the city of Philadelphia, in the county of Philadelphia and State of Pennsylwmin, have invented certain new and useful Improvements in Molds for asting Metal Pipes, of which the following is e, specification.

My invention has relation to a mold for casting n-nter, soil and other pipes therein from molten metal. and in such connection it relates particularly to the constructive orrnngement thereol', wherein a cost pipe is )roduced ready tor use without turther linishing upon removal from the mold, and without blow-holes and other imperfections to be removed, and of the character shown, described and claimed in an application for United Stntes Letters Patent Serial No, 369,489, tiled by me, under date oi April 2'), A. l). 1907.

The principal objects of my invention are lirst, to provide tt i ompurntivelysimple efl'ect ive and easily nmnipulated two part permnnent mold consisting of cope and t rug, in which the parting ol' the one trom the other, is at angle greater them the horizontal: second to provide the cope ol the mold with combined pour holes and gates, nrrnnged in the parting surface of the mold; third, to provide a mold, in which pouring ol' the metal is ellected directly against the core, in on ohliquc direction thereto; fourth to provid" n mold, in which when tho pipe is ctr-st and rope is removed, the pipe and gates can he removed together; and l'ilth to provide a mold, in which pouring ol' the molten metal is mpidly ell'ected and with. waste of the meted m the operation, reduced to a minimunr The nature :md scope of my invention will he more fully understood from the following description taken in connection with the necom )unying drawings forming part hereol', in which Figure l, is an end elevationnl view of a, two-part, mold, comprising cope and drag pan-ting at on single to the horizontal, embodying main features oi my invention. Fig. is a vertical sectional view through the two-part mold of Fig. 1, showing the cope hinged to the drag and also showing the location of the pouring holes and gates of the .mold at an angle to the horizontal and an 111' ternal perforated composition core; and 3, IS. a plan View, showing the internal constructive torrnntion of tho cops of the mold Specification of Letters Patent.

l and the,

l l l Patented May 12, M9023.

{serial no. 385,612.

pour holes and gates thereof; the drag in this view being shown, .ss removed. Referring to the drawings 4, is the permanent metal mold, cousistiin of a substantial solid body forming a. cope 5, and o similar solid l) ')(l l'orming a drag (5, shown us hinged at 7, to each other, but any other form oi connection tor both cope and drag may be employed, with good results. The two parts of the mold are divided in the. present instance, at an angle of to each other. At suitable distances'zapart in the surface oi one of shutting feces of the. mold are provided dep essions constituting when the are, brought in contact pour-holes H, and gates 9, as clearly illustrated in Fig. in the pies ent instance, the pour-holes S, and gates t}, are illustrated as being arranged in the cope, but us a matter of tact they could be no range-d partly in the cope and partly in the drag or wholly in the drag:

it), is the i position core, occupying at position between the cope mid the drug, in operutive position,

as shown in Fig. 2,-zmd iu-ound' which core, the molten metal is run, utter passing through the respective pour-holes 8, and gates 9. The pour-holes 8, each consist of an enlarged howl-shaped mouth, adapted to conduct the metal into n contrnctml portion 14-, from which the metal tlows into branches 1! and [3, ol the gates 9, and then into the minulnr depression 15, of the mold 4, around the core it), to permit by the uuiterm velocities and cruel pressures in the flow of the, metal at the dill'erent points through the gates, oi the casting-oi a pipe perfect in fornnitionnnd tree from blow, send and other holes, due to the fact that air on car- .ried in advance. of the {lowing molten metal in the lornnttion oi the pipe, are freed into the interior ol the. hollow peri'oruted core, as

well as into the groove -16, provided in the surface of the cope 5, ol the mold clearly illustrated in Fig. 2.

The character of the cope und drag of the pernni-nent mold is such es that when brought together, the qunntity of metal therein, is sullieient to withstand any ossible tend ency to warping or cracking?) metal poured into the some, owing to dilfer ences in temperature. The factthat the two parts oi? the. mold are readily separable from each other and the poiiring is affected at an angle to the horizontal, directly s-tgsinst the core 16 thereof, is efiocted o greatsaving ntermil hollow perforated corn y the molten 

